Luxostat.



W. J. HARVEY.

LUXOSTAT. APPLICATION FILED NOV- 18. I915.

Patented 00?. 3, 1916,

15* FL I" 2 5 n 9" 3 Inventor.

WALTER J. HARVEY, OF TORONTO, ONTARIO, CANADAF LUXOSTAT.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed November 18, 1915. Serial No. 62,169.

To all whom it may concern:

Be it known that I, WALTER JAMES HAR- vnr, a subject of the King of Great Britain, and resident of the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Luxostats, as described in the following specification and. illustrated in the accompanying drawings, that form part of the same.

The priifcipal objects of the invention are, to improve the conditions of handling light in ophthalmic and therapeutic work, and to devise an apparatus by which the light is controlled and regulated in quantity, quality and composition to suit the varying requirements. I

A further object is todevise an apparatus of this kind which will have considerable latitude of adjustment and which may be handled with ease and accuracy.

A still further object is to provide a reflecting means which may be adjusted to direct the rays of light from a common source in various directions to concentrate the same upon one or more objects or points at the same or various distances from the light source.

The principal feature of the invention consists in the novel construction and arrangement of parts, whereby the rays of light from a suitable generating source are intercepted by a reflector adjustably arranged in relation to the light and diverged or converged thereby and controlled by means adjustably interposed between the reflector and the subject upon which the light is directed.

In the drawings, Figure 1 is a perspective view of a device constructed in accordance with this invention being partly broken away. Fig. 2 is a vertical sectional view of the reflector. Fig. 3 is an enlarged perspective detail of one of the reflecting members showing the adjustable support therefor.

Like numerals of referenceindicate corresponding parts in each figure.

Referring to the drawings, 1 is "the main supporting bar of the apparatus here shown.

having the ends 2 upturned and suspended by suitable flexible supports 3 for the purpose of adjustable suspension, the bar may however be rigidly supported if desird.

4 are a plurality of sleeve members in-the form of Ts slidably and rotatably arranged 10 are T members secured to the outer ends of the arms 8 having the head portions 11 .iormed with. orifices extending perpendicularly therethrough.

12 is a rigid frame here shown of rectangular form having secured to the upper side the threaded rods 13 which extend through the orifices in the head ends 11 of the Ts 10.

14 are adjusting nuts threaded upon the upper ends of the rods 13 above the T heads 10 and engaging same and adjustably supporting the frame 12.

15 are sector-shaped plates secured at their outer sides to the side members of the frame 12 by double hinge members 16 and extending inwardly toward the center of the frame. F 17 is a small platecentrally arranged be tween the inner ends of the sector shaped plates 15 and secured to each of said sector plates by the hinges 18. d

19 is a threaded spindle pivotally secured to the back of the center plate 17 by the socket plate 20. p

21 is a threaded sleeve arranged upon the spindle 19 having a squared central portion 22 rranged between the end flanges 23.

24 is a rigid frame extending across the back of the frame 12 and having a slotted recess 25 adapted to receive the squared portion 22 of the sleeve 21 to hold the same from turning, said recess being open at the top so that the sleeve may be easily entered or removed therefrom.

The spindle 19 is provided with a crank 26 on its outer end and is adapted to be rea double swivel connection, which is here shown in the form of a crossed member 28 having the arms 29 thereof pivotally secured in the'lugs extending outwardly from the back of the mirror frame and the cross arms 31being pivotally supported in the lug members 32 extending from the'back of the plates 15, locking nuts 33- are provided in the outer ends of the arms 29 and 31 in order to secure the reflectors in the desired angular position,

34 is a U-shaped tube having the threaded ends 35 extending upwardly-through the -T heads 10 supported from one of the members 4: being adjustably supported by the adjusting nuts 14:.

36 is a block secured to the lower loop of the member 34.

37 is av rod adjustably arranged. in the block 36 supporting at its lower end a suit-' able lighting medium. 38 which is here shown of a simple form of. carbon arc.

"39 is a rectangular frame suspended from the rods 40 which are threaded and adjustably supported in the T heads 10 of another set, said frame being formed to receive suitable screens adapted to intercept the light either from the lighting medium or the reflector, or both, as may be desired.

' It will be understood from this description that the reflector, the lighting medium .and the screen may all be adjusted longi tudinally upon the bar 1 or they may be swung laterally by rotating the members 4 on said bar or they may be swung upon their own central supports formed by the I stems 6 of the members 4 into various positions. A great variety of adjustment can thus be obtainedin the matter of directing, controlling or diffusing the light. .The

screen frame is utilized for holding a reflector or one or more screens'for diffusion or breaking up ofthe light into its chromatic, chemical or thermal or other constituents' and for regulating the quantity, quality and composition of the light.

In addition to the movements hereinbefore mentioned the several members may be swung from the perpendicular plane by ,ro-

tating the arms 8 in their supporting bearings. The peculiar construction of the re-.

flecting member herein described allows of a plurality of individual reflecting surfaces being arranged to direct a certain amount of light in one particular spot. Other groups may be arrangedgto direct the light eration of the individual plates and also of the operation of the hinged sector supthus allowing of the comto another particular spotor allv may be arranged toconcentrate all of the rays (1; light is extremely flexible by reason of the opporting plates, plete control of range of reflection as well as concentration or diffusion.

The extreme flexibility of adjustment ofthe entire apparatus allows-of perfect control of the parts on which the light is to .justably supported from rotatable members.

to a. common point, The adjustment be used-and provides an apparatus which may be utilized to very great advantage 1n many forms in'the use of a controlled light 'in addition to therapeutic and ophthalmic work.

-What I claim as my invention is 1. A. luxostat, comprising, a horizontal supported bar member, a plurality of sleeve members slidably and rotatably supported on said bars, transversely arranged rotatable members carried on said sleeve members, a reflector suspended-from one of said rotatable members and vertically adjustable thereon, a light modifying means suspended from" another of said rotatable members and vertically adjustable, and a light adanother of said to said sleeve members having transverseorifices at their outer ends, frames having arms adapted to extend through the orifices in the aforesaid arms, adjusting nuts threaded upon the upper endsof the'frame arms and supporting said frames fromsaid transversely arranged arms, locking means for securing the adjustable members in position, a reflector supported from one of said frames, a screen supported from another of said frames, and a light another of said frames.

4. A luxostat, comprising, a longitudinal supporting. member, a frame adjustably supported from suspended from said supporting member a plurality of reflecting members arranged within said frame, means for tilting the reflecting members at various angles independently the one of the other, a light, and means for modifying the light adjustably suspended from said support.

5. A luxostat, comprising, a longitudinal supporting member, a frame adjustably suspended from sa1d supporting member,

supported from a horizontally sleeve members adjustable members supported in said frame and adapted to beset in varying angular positions and a plurality of reflecting members supported on each of said adjustable members and each adapted to be adjusted at any deslred angle independently the one of the other, a light, and means for modifying the light adjustably suspended from said support.

6. A luxostat, comprising, a longitudinal supporting member, a frame adjustably suspended from said supporting member, a plurality of plate members hinged to said frame and extending inwardly, a centrally adjustable member connected to the inner ends of said plate members, and means for adjustably supporting said central member and moving same to adjust the angles of said plate members, a light, and means for modifying the light adjustably suspended from said supporting member. I

7. A luxostat, comprising, a longitudinal supporting member, a frame adjustably suspended from said supporting member, ad-

justable plate members supported in said frame and a plurality of reflecting members supported on universal hinges and arranged on said plate members, a light and means for modifying the light adjustably suspended from said supporting member. WALTER J. HARVEY. 

